Support assembly

ABSTRACT

A support assembly includes a plurality of moving members and connecting members each connecting two adjacent moving members of the plurality of moving members, a movement of each of the plurality of moving members relative to an adjacent moving member enabling the support assembly to be switched between a first state and a second state. The second state is more curved than the first state. The support assembly can be transformed into different forms according to requirements, so as to adapt to application requirements of various shapes of flexible screen.

RELATED APPLICATIONS

The present application is a National Phase of International ApplicationNumber PCT/CN2017/073364, filed Feb. 13, 2017; and claims the priorityof International Application No. PCT/CN2016/090477, filed Jul. 19, 2016;and International Application No. PCT/CN2016/090478, filed Jul. 19,2016; and International Application No. PCT/CN2016/090479, filed Jul.19, 2016.

TECHNICAL FIELD

The present disclosure relates to supporting assemblies, and moreparticularly to a support assembly for a flexible screen.

BACKGROUND

The existing electronic devices, such as mobile phones, tablets, videoplayers and the like with display screens are straight panel due tolimitations of materials of screens. With development of screentechnology, the industry has developed flexible display screens, and itis expected to develop various types of electronic devices that can bebent or folded in the future. Due to flexible nature of the flexibledisplay screen, a corresponding movable mechanical structure is requiredto support it. Obviously, a support structure of an existing harddisplay screen cannot meet the needs of bending or folding.

SUMMARY

The present disclosure provides a support assembly that can meet theneeds of bending or folding.

A support assembly includes a plurality of moving members and connectingmembers each connecting two adjacent moving members of the plurality ofmoving members. A movement of each of the plurality of moving membersrelative to an adjacent moving member enables the support assembly to beswitched between an unfolded state and a bent state.

The movement of each of the plurality of moving members relative to theadjacent moving member includes a rotation of each of the plurality ofmoving members relative to the adjacent moving member. A rotating centerof each of the plurality of moving members rotating relative to theadjacent moving member is below the adjacent moving member.

Each of the plurality of moving members includes a base, and, a limitgroove and a through hole defined on the base. Each of the connectingmembers passes through the limit groove of one of the plurality ofmoving members and penetrates the through hole of the adjacent movingmember.

The limit groove of each of the plurality of moving members is in an arcshape, and a center of the limit groove is below a bottom surface of thebase.

Each of the plurality of moving members further includes a firstlimiting part and a second limiting part respectively locating onopposite sides of the base. The second limiting part of each of theplurality of moving members is movably abutting against the firstlimiting part of the adjacent moving member.

A moving track of the second limiting part of each of the plurality ofmoving members relative to the first limiting part of the adjacentmoving member is in an arc shape. A center of the moving track is belowthe adjacent moving member.

The first limiting part and the second limiting part are respectivelyadjacent to opposite ends of each of the plurality of moving members.

The first limiting part includes a first positioning surface in an arcshape. The second limiting part includes a second positioning surface inan arc shape. Centers of the first positioning surface and the secondpositioning surface are below the bottom surface of the base.

The first positioning surface and the second positioning surface arerespectively inclined toward opposite ends of the base.

A height of a center of the first positioning surface is the same as aheight of a center of the second positioning surface.

The center of the second positioning surface coincides with the centerof the limit groove along a first direction, and the first direction isfrom one side of the base to an opposite side of the base.

A top surface of the base is an arc-shaped surface, and top surfaces ofthe bases of two adjacent moving members are staggered when the supportassembly is unfolded, and the top surfaces of the bases of the twoadjacent moving members are continuous with each other when the supportassembly is bent.

A center of the top surface of the base is below the center of the limitgroove.

The first limiting part further includes a first limiting surface, thesecond limiting part further includes a second limiting surface, thesecond limiting surface of each of the plurality of moving members ismovably abutting against the first limiting surface of the adjacentmoving member.

The first limiting surface is higher than the first positioning surfaceand is further away from the base than the first positioning surface.

The second limiting surface is higher than the second positioningsurface and closer to the base than the second positioning surface.

A center of the first limiting surface coincides with the center of thefirst positioning surface along a first direction, and a center of thesecond limiting surface coincides with the center of the secondpositioning surface along the first direction, and the first directionis from a side of the base to an opposite side of the base.

Each of the connecting members includes a rod member and a lockingmember, the rod member includes a head portion and a rod portion passingthrough two adjacent moving members, an end of the rod portion is lockedwith the locking member.

The base of each of the plurality of moving members defines apositioning groove for receiving the head portion, and the positioninggroove surrounds the limit groove and interconnects with the limitgroove.

The base includes a first base plate and a second base platemanufactured independently of each other, the head portion of the rodmember is located between the first base plate and the second baseplate.

The connecting member further includes an end portion, the end portionand the rod portion are respectively located on opposite sides of thehead portion, and the end portion penetrates into the limit groove ofthe first base plate, the rod portion penetrates into the limit grooveof the second base plate.

The through hole of the first base plate includes two opposite planes,and the rod portion correspondingly forms two opposite planescorresponding to the two opposite planes of the through hole.

The first base plate forms a stopper above the limit groove, each of theplurality of moving members is abutted against by the stopper of theadjacent moving member to limit a rotating angle when the supportassembly is in the unfolded state. each of the plurality of movingmembers is separated from the stopper of the adjacent moving member whenthe support assembly is in the bent state.

The positioning groove is defined on a surface of the first base platefacing the second base plate, and a receiving groove is defined on asurface of the second base plate facing the first base plate andinterconnected with the positioning groove. The rod portion of theconnecting member passes through the limit groove of each of theplurality of moving members and penetrates into the receiving groove ofthe adjacent moving member.

The locking member is received in the receiving groove of the secondbase plate of the adjacent moving member.

By using a plurality of moving members that can be movable relatively,the support assembly can be switched between the unfolded state and thebent state according to need, thereby facilitating bending or folding ofthe flexible electronic device with the support assembly.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

To describe technology solutions in the embodiments of the presentdisclosure more clearly, the following briefly introduces theaccompanying drawings required for the embodiments. Obviously, theaccompanying drawings in the following description show merely someembodiments of the present disclosure, those of ordinary skill in theart may also derive other obvious variations based on these accompanyingdrawings without creative efforts.

FIG. 1 is a perspective view of a flexible device according to oneembodiment of the present disclosure.

FIG. 2 is an exploded view of the flexible device of FIG. 1.

FIG. 3 is an exploded view of a support assembly of the flexible deviceof FIG. 2.

FIG. 4 is a partial enlarged view of the support assembly of FIG. 3.

FIG. 5 is an enlarged view of a moving member of the support assembly ofFIG. 4.

FIG. 6 is a rear perspective view of the moving member of FIG. 5.

FIG. 7 is an upper left perspective view of the moving member of FIG. 5.

FIG. 8 is an inverted view of the moving member of FIG. 5.

FIG. 9 is a plan view of the moving member of FIG. 5.

FIG. 10 is a front view of the moving member of FIG. 5.

FIG. 11 is a cross-sectional view of the moving member of FIG. 9 takenalong line I-I.

FIG. 12 is a rear view of the moving member of FIG. 5.

FIG. 13 is a cross-sectional view of the moving member of FIG. 9 takenalong line II-II.

FIG. 14 is a cross-sectional view of the support assembly of FIG. 2.

FIG. 15 is an enlarged view of one moving member located at one end ofthe support assembly.

FIG. 16 is a diagram showing a bent state of the flexible device.

FIG. 17 is a cross-sectional view of the flexible device of FIG. 16.

FIG. 18 is an enlarged view of the support assembly according to anotherembodiment of the present disclosure.

FIG. 19 is an exploded view of the support assembly of FIG. 18.

FIG. 20 is an enlarged view of a first base plate of the moving memberof the support assembly of FIG. 18.

FIG. 21 is a rear perspective view of the first base plate of FIG. 20.

FIG. 22 is an enlarged view of a second base plate of the moving memberof the support assembly of FIG. 18.

FIG. 23 is a rear perspective view of the second base plate of FIG. 22.

FIG. 24 is a front view of the first base plate of FIG. 20;

FIG. 25 is a rear view of the first base plate of FIG. 20.

FIG. 26 is a front view of the second base plate of FIG. 22.

FIG. 27 is a rear view of the second base plate of FIG. 22.

FIG. 28 is a cross-sectional view of the support assembly of FIG. 18.

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

The technical solutions in the present disclosure will be describedclearly and completely in the following with reference to theaccompanying drawings in the present disclosure.

Referring to FIGS. 1-2, a flexible device according to one embodiment ofthe present disclosure is shown. The flexible device includes a firsthousing 10, a second housing 20, a flexible screen 30 attached to thefirst housing 10 and the second housing 20, and a support assembly 40supporting the flexible screen 30. The flexible device can be switchedbetween an unfolded state and a folded/bent state. In the unfoldedstate, the flexible screen 30 is unbent and expanded, the first housing10 and the second housing 20 are arranged side by side; in thefolded/bent state, the flexible screen 30 is folded or bent, and thefirst housing 10 and the second housing 20 are stacked one by one.

The first housing 10 and the second housing 20 are substantially inflat-plate shape, and they can be made of hard materials such as metalor plastic. The first housing 10 and the second housing 20 may be hollowfor receiving various electronic components such as a control module, astorage module, a drive module, a power module, a switch module, aspeaker module, a sensor module, and the like. The first housing 10 andthe second housing 20 are separated from each other with a narrow groove100 defined therebetween.

One side of the first housing 10 defines a plurality of grooves 102along a length direction thereof for fixing the support assembly 40. Inthis embodiment, the number of the grooves 102 is four, two of which arerespectively close to opposite ends of the first housing 10, and theother two of which are close to a middle part of the first housing 10.The groove 102 is sunken from a top surface of the first housing 10 toinside of the first housing 10, that is, the groove 102 does not cutthrough the first housing 10 from top surface to bottom surface. Thegroove 102 also laterally cuts through one side surface of the firsthousing 10 adjacent to the second housing 20. The bottom surface of thegroove 102 defines a circular screw hole for a screw passing through tofix the support assembly 40 to the first housing 10. One side of eachgroove 102 also defines an avoiding slot 104 in the first housing 10.The avoiding slot 104 is sunken from the bottom surface of the firsthousing 10 to the inside of the first housing 10, that is, the avoidingslot 104 does not cut through the first housing 10 from the bottomsurface to the top surface. The avoiding slot 104 also laterally cutsthrough one side surface of the first housing 10 adjacent to the secondhousing 10. The avoiding slot 104 is used for receiving certain portionsof the support assembly 40 to reduce space occupied by the supportassembly 40. Each avoiding slot 104 is disposed with one groove 102 inpairs.

One side of the second housing 20 close to the first housing 10 definesa plurality of grooves 202 for fixing the support assembly 40. In thisembodiment, the number of the grooves 202 is also four, two of which areclose to one end of the second housing 20, and the other two of whichare close to opposite end of the second housing 20. In particular, adistance of one groove 202 closest to one end of the second housing 20to the end of the second housing 20 is greater than that of one groove102 closest to one end of the first housing 10 to the end of the firsthousing 10. Along the length direction of the first housing 10 or thesecond housing 20, the grooves 202 of the second housing 20 and thegrooves 102 of the first housing 10 are staggered with each other to fixdifferent portions of the support assembly 40. The groove 202 is sunkendownward from a top surface of the second housing 20 to the inside ofthe second housing 20, that is, the groove 202 does not cut through thesecond housing 20 from the top surface to the bottom surface. The groove202 also laterally cuts through one side surface of the first housing 10adjacent to the second housing 20. The bottom surface of the groove 202defines a circular screw hole for a screw passing through to fix thesupport assembly 40 to the second housing 20. One side of each groove202 also defines an avoiding slot in the second housing 20. The avoidingslot is sunken upward from a bottom surface of the second housing 20 toinside of the second housing 20, that is, the avoiding slot does not cutthrough the second housing 20 from the bottom surface to the topsurface. The avoiding slot also laterally cuts through one side surfaceof first housing 10 adjacent to the second housing 20. The avoiding slotis used for receiving certain portions of the support assembly 40 toreduce a space occupied by the support assembly 40. Each avoiding slotis disposed with one groove 202 in pairs.

The flexible screen 30 is attached to the bottom surfaces of the firsthousing 10 and the second housing 20. The flexible screen 30 can be aflexible display screen, a flexible touch screen, a combination of thetwo, or other types of flexible screens. The flexible screen 30 includesa bonding portion 32 bonded to the first housing 10, a bonding portion32 bonded to the second housing 20, and a connecting portion 34 betweenthe two bonding portions 32. The connecting portion 34 is located in thegroove 100 between the first housing 10 and the second housing 20. Whenthe flexible device is unfolded, the bonding portions 32 and theconnecting portion 34 lie in a plane; when the flexible device is foldedor bent, the connecting portion 34 bends correspondingly, and the twobonding portion 32 face with each other, and the first housing 10 andthe second housing 20 are disposed opposite to each other.

Referring to FIGS. 3 and 4, in this embodiment, there are four groups ofsupporting assemblies 40, and each group of support assembly 40 connectsthe first housing 10 and the second housing 20 along a length directionof the first housing 10 or the second housing 20. Each group of thesupport assembly 40 includes a plurality of moving members 50 coupled inseries. Each moving member 50 is movably coupled to the adjacent movingmember 50 through a connecting member 60, thereby movably supporting theflexible screen 30. Referring to FIGS. 5-13, in the embodiment, themoving member 50 includes a base 52, a first limiting part 54 and asecond limiting part 56 respectively protruding from front side and rearside of the base 52. The base 52 is substantially circular sector-shapedand includes a top surface 520, a bottom surface 521, a left end surface522, a right end surface 523, a front side surface 524, and a rear sidesurface 525. The bottom surface 521 of the base 52 is a rectangularplane, and the left end surface 522 and the right end surface 523 arerectangular planes perpendicular to the bottom surface 521. The topsurface 520 of the base 52 is a convex surface that protrudes upward ina direction away from the bottom surface 521. The height of the topsurface 520 gradually increases from the left end surface 522, the rightend surface 523 to a middle part, thereby the top surface being curved.A center O0 of the top surface 520 is located below the bottom surface512 of the base 52 (see FIG. 10). The front side surface 524 and therear side surface 525 are perpendicular to the bottom surface 521, theleft end surface 522, and the right end surface 523 at the same time.The area of the front side surface 524 and the rear side surface 525 isgreater than that of the left end surface 522 and the right end surface523. The base 52 defines a limit groove 51 and a through hole 53 cutthrough the front side surface 524 and the rear side surface 525. Thelimit groove 51 is located close to the right end surface 523 of thebase 52. The limit groove 51 is in an arc shape, and substantiallyinclined to the right and curved toward the top surface, and its centerO1 is located below the bottom surface 521 of the base 52 (see FIG. 10).The limit groove 51 includes a bottom surface 510, a top surface 512,and two side surfaces 514 coupling the top surface 510 and the bottomsurface 512. The bottom surface 510 is an up-convex curved surface, thetop surface 512 is an up-concave curved surface, and the side surfaces514 are curved surfaces concaved to the left and right respectively. Inthis embodiment, the curvature of the bottom surface 510 is greater thanthat of the top surface 512, and the bottom surface 510 is paralleled tothe top surface 512. The curved surface of the bottom surface 510 is apart of an arc surface, and its center O2 is located below bottomsurface 521 of the base 52. The curved surface of the top surface 512 isalso a part of an arc surface, and its center O3 is located below thebottom surface 521 of the base 52 and coincides with the center O2 ofthe bottom surface 510. In particular, the center O2 of the bottomsurface 510 and the center O3 of the top surface 512 are located closeto the bottom surface 521 of the base 52 and coincide with the center O1of the limit groove 51. The side surfaces 514 smoothly connect the topsurface 512 and the bottom surface 510. The side surfaces 514 each isalso a part of an arc surface, but its center O4 is located inside thelimit groove 51, and is higher than the bottom surface 510, and is belowthe top surface 512. The centers O4 of the two side surfaces 514 aredifferent in height, wherein, the center O4 of the left side surface 514is higher than the center O4 of the right side surface 514, causing thelimit groove 51 to incline to the right. In other words, the center O3of the top surface 512 and the center O2 of the bottom surface 510 arebelow the centers O4 of the side surfaces 514. In this embodiment, thebase 52 further defines a positioning groove 55 on an outercircumference of the limit groove 51. The positioning groove 55 islocated close to the front side surface 524 and surrounds the limitgroove 51. The area of the positioning groove 55 is greater than thearea of the limit groove 51. The positioning groove 55 is also in an arcshape, and its center O5 is below the bottom surface 521 of the base 52(see FIG. 11). The positioning groove 55 extends rearward from the frontside surface 524 of the base 52 to inside of the base 52, that is, thepositioning groove 55 does not cut through the base 52 from frontsurface to back surface. The positioning groove 55 also includes a topsurface 552, a bottom surface 550, and two side surfaces 554. The topsurface 552 of the positioning groove 55 is also a concave curvedsurface and is parallel to the top surface 512 of the limit groove 51;the bottom surface 550 of the positioning groove 55 is a convex curvedsurface and is parallel to the bottom surface 510 of the limit groove51; the side surfaces 554 of the positioning groove 55 are concavecurved surfaces, and parallel to the side surfaces 514 of the limitgroove 51 respectively. In this embodiment, the curvature of the bottomsurface 550 of the positioning groove 55 is greater than that of the topsurface 552. The curved surface of the bottom surface 550 is a part ofan arc surface, and its center O6 is located below the bottom surface521 of the base 52. The curved surface of the top surface 552 is also apart of an arc surface, and its center O7 is located below the bottomsurface 521 of the base 52, and coincides with the center O6 of thebottom surface 550 and the center O5 of the limit groove 51. Inparticular, the center O6 of the bottom surface 550 and the center O7 ofthe top surface 552 of the positioning groove 55 are located close tothe bottom surface 521 of the base 52 and coincide with the center O2 ofthe bottom surface 510 and the center O3 of the top surface 512 of thelimit groove 51 along a first direction. The first direction is from oneside of the base 52 to an opposite side of the base 52. In the presentembodiment, the first direction is from the front side surface 524 ofthe base 52 to the rear side surface 525 of the base 52 or from the rearside surface 525 to the front side surface 524. In other words, thefirst direction is a thickness direction of the base 52, or a depthdirection of the limit groove 51 or the positioning groove 55. The sidesurfaces 554 of the positioning groove 55 smoothly couple the topsurface 552 and the bottom surface 550. The side surfaces 554 each isalso a part of an arc surface, and its center O8 is located inside thepositioning groove 55, and is higher than the bottom surface 550 and isbelow the top surface 552. The centers O8 of the two side surfaces 554are different in height, wherein the center O8 of the left side surface554 is higher than the center O8 of the right side surface 554, thuscausing the positioning groove 55 to incline to the right. The centersO8 of the side surfaces 554 of the positioning groove 55 and the centersO4 of the side surfaces 514 of the limit groove 51 coincide in the firstdirection.

The first limiting part 54 and the second limiting part 56 arerespectively close to opposite ends of the base 52. The first limitingpart 54 is located at a left end of the front side surface 524 of thebase 52, which is adjacent to the limit groove 51 and the positioninggroove 55. The first limiting part 54 protrudes forward from the frontside surface 524 of the base 52, and its top surface defines a groove540 close to the front side surface 524 of the base 52. The portion ofthe top surface of the first limiting part 54 without the groove 540forms a first limiting piece 542 protruding upward. The bottom surfaceof the first limiting part 54 is aligned with the bottom surface 521 ofthe base 52, the left end surface is aligned with the left end surface522 of the base 52, the right end surface is located close to thepositioning groove 55, and the rear side surface is engaged with thefront side surface 524 of the base 52. The height of the top surface ofthe first limiting part 54 is less than that of the top surface 520 ofthe base 52. The bottom surface, the left end surface, and the right endsurface of the first limiting part 54 are in plane shape, and the topsurface is a convex arc surface. The top surface of the first limitingpart 54 forms a first limiting surface 544. The first limiting surface544 is a part of an arc surface, and its center O9 is located below thebottom surface 521 of the base 52 (see FIG. 10), and the height of thecenter O9 is consistent with the heights of the center O1 of the limitgroove 51, the center O5 of the positioning groove 55, the center O2 ofthe bottom surface 510, the center O3 of the top surface 512, the centerO6 of the bottom surface 550, the center O7 of the top surface 552. Inparticular, the center O9 of the first limiting surface 544 is close tothe left end surface 522 of the base 52; the center O1 of the limitgroove 51, the center O5 of the positioning groove 55, and the center O2of the bottom surface 510, the center O3 of the top surface 512, thecenter O6 of the bottom surface 552 and the center O7 of the top surface552 are close to the right end surface 523 of the base 52. The curvatureof the first limiting surface 544 is greater than that of the topsurface 520 of the base 52. Preferably, the curvature of the firstlimiting surface 544 is less than that of the top surface 552 and thebottom surface 550 of the positioning groove 55, and is further lessthan the that of the top surface 512 and the bottom surface 510 of thelimit groove 51. An inclination direction of the first limiting surface544 is the left, which is opposite to the inclination direction of thepositioning groove 55 and the limit groove 51. The first limiting piece542 is spaced from the front side surface 524 of the base 52 through thegroove 540. The groove 540 extends to inside of the first limiting part54 from top to bottom and cuts through the left end surface and theright end surface of the first limiting part 54 along a left-rightdirection. The bottom surface of the groove 540 forms a firstpositioning surface 546 (see FIG. 11). The first positioning surface 546is below the first limiting surface 544 and is closer to the base 52than the first limiting surface 544. The first positioning surface 546is also a part of an arc surface, its center O10 is located below thebottom surface 521 of the base 52, and the height of the center O10 isconsistent with the heights of center O1 of the limit groove 51, thecenter O5 of the positioning groove 55, the center O2 of the bottomsurface 510, the center O3 of the top surface 512, the center O6 of thebottom surface 550 and the center O7 of the top surface 552, and thecenter O9 of the first limiting surface 544. The center O10 of the firstpositioning surface 546 coincides with the center O9 of the firstlimiting surface 544 along the first direction. The heights of thecenter O10 of the first positioning surface 546 and the center O9 of thefirst limiting surface 544 are both greater than height of the center O0of top surface 520 of the base 52. In particular, the center O9 of thefirst limiting surface 544 and the center O10 of the first positioningsurface 546 are close to the left end surface 522 of the base 52. Thecenter O1 of the limit groove 51, the center O5 of the positioninggroove 55, and the center O2 of the bottom surface 510, the center O3 ofthe top surface 512, the center O6 of the bottom surface 550, the centerO7 of the top surface 552 are close to the right end surface 523 of thebase 52. The first positioning surface 546 is parallel to the firstlimiting surface 544. The curvature of the first positioning surface 546is greater than the curvature of the top surface 520 of the base 52.Preferably, the curvature of the first positioning surface 546 isgreater than the curvature of the first limiting surface 544 and thecurvature of the top surface 552 of the positioning groove 55, and isless than the curvature of the top surface 512 and the curvature of thebottom surface 510 of the limit groove 51 and the curvature of thebottom surface 550 of the positioning groove 55. The inclinationdirection of the first positioning surface 546 is the left, which isopposite to the inclination direction of the positioning groove 55 andthe limit groove 51, and is the same as the inclination direction of thefirst limiting surface 544. The through hole 53 of the base 53 alsoextends to the front side surface of the first limiting part 54 to forma hole that cuts through from the front to the back.

The second limiting part 56 is located on the rear side surface 525 ofbase 52. The second limiting part 56 protrudes rearward from the rearside surface 525 of the base 52. The second limiting part 56 includes aconnecting plate 560 and a protrusion 562 protruding from the connectingplate 560. The bottom surface of the connecting plate 560 is alignedwith the bottom surface 521 of the base 52, the left end surface of theconnecting plate 560 is close to the through hole 53, the right endsurface of the connecting plate 560 is aligned with the right endsurface 523 of the base 52, and the top surface of the connecting plate560 is aligned with the top surface 520 of the base 52. The connectingplate 560 is coupled to the rear side surface 523 of the base 52. Thearea in which the connecting plate 560 is engaged with the base 52 isgreater than the area in which the first limiting part 54 is engagedwith the base 52. The protrusion 562 protrudes from an upper portion ofthe rear side surface of the connecting plate 560. The top surface ofthe protrusion 562 is aligned with the top surface of the connectingplate 560. The top surface of the protrusion 562, the top surface of theconnecting plate 560, and the top surface 520 of the base 52 are allconvex arc surfaces, and are smoothly connected. Therefore, the topsurface of each moving member 52 forms a continuous arc surface. Theleft end surface of the protrusion 562 is aligned with that of theconnecting plate 560, and the right end surface of the protrusion 562 isaligned with that of the connecting plate 560, and the bottom surface ofthe protrusion 562 is higher than that of the connecting plate 560. Thebottom surface of the protrusion 562 defines a groove 564. The groove564 extends to inside of the protrusion 562 from the bottom to the top.The groove 564 also cuts through the left end surface and the right endsurface of the protrusion 562 in a left-right direction. The portion ofthe bottom surface of the protrusion 562 without the groove 564 forms asecond limiting piece 565. The height of the second limiting piece 565is greater than the height of the first limiting piece 542. The secondlimiting piece 565 is separated from the rear side surface of theconnecting plate 560 through the groove 564. The bottom surface of thesecond limiting piece 565 forms a second positioning surface 566 forabutting against the first positioning surface 546 of the rear adjacentmoving member 50. The second positioning surface 566 is slightly higherthan the first positioning surface 546. The second positioning surface566 is a part of an arc surface, and its center O11 is located below thebottom surface 521 of the base 52 (see FIG. 12), and the height of thecenter O11 is consistent with the heights of the center O10 of the firstpositioning surface 546, the center O9 of the first limiting surface544, the center O1 of the limit groove 51, the center O5 of thepositioning groove 55, and the center O2 of the bottom surface 510, thecenter O3 of the top surface 512, the center O6 of the bottom surface550, the center O7 of the top surface 552. Moreover, the center O11 ofthe second positioning surface 566 also coincides with the center O1 ofthe limit groove 51, the center O5 of the positioning groove 55, thecenter O2 of the bottom surface 510, the center O3 of the top surface512, the center O6 of the bottom surface 550, and the center O7 of thetop surface 552 along the first direction. In particular, the center O11of the second positioning surface 566 is close to the right end surface523 of the base 52; the center O10 of the first positioning surface 546and the center O9 of the first limiting surface 544 are close to theleft end surface 522 of the base 52. The curvature of the secondpositioning surface 546 is greater than the curvature of the top surface520 of the base 52 and less than the curvature of the top surface 512and the bottom surface 510 of the limit groove 51. An inclinationdirection of the second positioning surface 546 is the right, and is thesame as that of the positioning groove 55 and the limit groove 51, andis opposite to that of the first limiting surface 544 and the firstpositioning surface 546.

The top surface of the groove 564 of the second limiting part 56 forms asecond limiting surface 568. The second limiting surface 568 is higherthan the second positioning surface 566, for abutting the firstpositioning surface 546 of the rear adjacent moving member 50. Thesecond limiting surface 568 is closer to the base 50 than the secondpositioning surface 566. The second limiting surface 568 of the secondlimiting part 56 is part of an arc surface, and its center O12 islocated below the bottom surface 521 of the base 52 (see FIG. 13), andthe height of the center O12 is consistent with the heights of thecenter O10 of the first positioning surface 546, the center O9 of thefirst limiting surface 544, the center O11 of the second positioningsurface 566, the center O1 of the limit groove 51, the center O5 of thepositioning groove 55, the center O2 of the bottom surface 510, thecenter O3 of the top surface 512, the center O6 of the bottom surface550, and the center O7 of the top surface 552. The center O12 of thesecond limiting surface 568 also coincides with the center O11 of thesecond positioning surface 566, the center O1 of the limit groove 51,the center O5 of the positioning groove 55, the center O2 of the bottomsurface 510, the center O3 of the top surface 512, the center O6 of thebottom surface 550, the center O7 of the top surface 552 along the firstdirection. In particular, the center O12 of the second limiting surface568, the center O11 of the second positioning surface 566 are close tothe right end surface 523 of the base 52, the center O10 of the firstpositioning surface 546, the center O9 of the first limiting surface 544are close to the left end surface 522 of the base 52. The secondlimiting surface 568 is parallel to the second positioning surface 566.The curvature of the second limiting surface 568 is greater than thecurvature of the top surface 520 of the base 52. Preferably, thecurvature of the second limiting surface 568 is also less than thecurvature of the top surface 512 of the limit groove 51 and the topsurface 552 of the positioning groove 55, and the bottom surface 510 ofthe limit groove 51, and the bottom surface 550 of the positioninggroove 55 of the second positioning surface 566. An inclinationdirection of the second limiting surface 568 is the right, and the sameas that of the second positioning surface 566, the positioning groove55, and the limit groove 51, and is opposite to that of the firstlimiting surface 544 and the first positioning surface 546. The secondpositioning surface 566 and the second limiting surface 568 are bothconcave curved surfaces. The first positioning surface 546 and the firstlimiting surface 544 are both convex curved surfaces. The positioninggroove 55 and the limit groove 51 of the base 52 also cut through thesecond limiting part 56. The height of the limit groove 51 is below theheights of the second positioning surface 566 and the second limitingsurface 568.

Referring to FIGS. 3-4, the adjacent moving members 50 are coupled inseries through the connecting member 60. In this embodiment, theconnecting member 60, that coupling each two adjacent moving members 50in series, includes a rod member 62 and a locking member 64 sleeved onthe rod member 62. During assembly, the limit groove 51 and thepositioning groove 55 of each moving member 50 are aligned with thethrough hole 53 of the rear adjacent moving member 50, and the secondlimiting part 56 of each moving member 50 abuts against the firstlimiting part 54 of the rear adjacent moving member 50, each firstlimiting part 54 of the moving member 50 abuts against the secondlimiting part 56 of the front adjacent moving member 50. The rod member62 passes through the positioning groove 55 and the limit groove 51 ofeach moving member 50, and extends out from the through hole 53 of therear moving member 50. The locking member 64 is locked to the portion ofthe rod member 62 that extending out the through hole 53 to limit therod member 62. In this embodiment, the rod member 62 includes a headportion 620 and a rod portion 620 extending from the head portion 620.The rod portion 622 is received in the limit groove 51 and the throughhole 53. The outer diameter of the head portion 620 is greater than theinner diameter of the through hole 53. The head portion 620 is receivedin the positioning groove 55 of the moving member 50 and abuts againstthe rear side surface of the positioning groove 55 of the moving member50 to prevent the rod member 62 from falling off. One end of the rodportion 620 away from the head portion 620 forms screw threads. In thisembodiment, the locking member 64 is a nut locked to the screw threadsat the end of the rod portion 622 to prevent the rod member 62 fromfalling off. In order to adjust the rotational damping between theadjacent moving members 50, the rod portion 622 is further provided witha spring 66. The spring 66 is located between the rear side surface 525of the moving member 50 and the front side surface of the nut. Byadjusting the nut on the screw threads of the rod member 62, a degree towhich the spring 66 is compressed can be adjusted, thereby adjusting therotational damping between the adjacent moving members 50.

Through the connection of the rod members 62, the adjacent movingmembers 50 are movably coupled together in series. The first limitingpiece 542 of the first limiting part 54 of each moving member 50 isinserted into the groove 564 of the second limiting part 56 of the frontadjacent moving member 50. The rear side surface of the first limitingpiece 542 of the first limiting part 54 of each moving member 50 abutsagainst the front side surface of the second limiting piece 565 of thesecond limiting part 56 of the front adjacent moving member 50, therebylimiting the two adjacent moving members 50 to prevent the two adjacentmoving members 50 from being separated from each other. Moreover, thefirst limiting surface 544 of the first limiting part 54 of each movingmember 50 abuts against the second limiting surface 568 of the secondlimiting part 56 of the front adjacent moving member 50, therebylimiting a track of a relative movement of the adjacent two movingmembers 50. The second limiting piece 565 of the second limiting part 56of each moving member 50 is inserted into the groove 540 of the firstlimiting part 54 of the rear adjacent moving member 50. The front sidesurface of the second limiting piece 565 of the second limiting part 56of each moving member 50 abuts against the rear side surface of thefirst limiting piece 542 of the first limiting part 54 of the rearadjacent moving member 50, thereby limiting the two adjacent movingmembers 50 to prevent the two adjacent moving members 50 from beingseparated from each other. Moreover, the second limiting surface 568 ofthe second limiting part 56 of each moving member 50 abuts against thefirst limiting surface 544 of the first limiting part 54 of the rearmoving member 50, thereby limiting a track of the relative movement ofthe adjacent two moving members 50.

In this embodiment, a relative moving track of the adjacent two movingmembers 50 are limited by the positioning groove 55, the limit groove51, the connecting member 60, the first limiting part 54 and the secondlimiting part 56. Specifically, the left side surface 514 and the rightside surface 514 of the limit groove 51 of the moving member 50 are arcsurfaces having a diameter which equals to a distance between the topsurface 512 and the bottom surface 510 of the limit groove 51, and assame as that of the through hole 53. The left side surface 554 and theright side surface 554 of the positioning groove 55 of the moving member50 are also arc surfaces having a diameter which equals to the distancebetween the top surface 552 and the bottom surface 550 of thepositioning groove 55. Referring to FIG. 14, the outer diameter of therod portion 622 of the rod member 62 is slightly less than or equals tothe diameter of the through hole 53, and the outer diameter of the headportion 620 is slightly less than or equals to a distance between thetop surface and the bottom surface of the positioning groove 55. Whenthe rod member 62 is disposed in the positioning groove 55 and the limitgroove 51 of the moving member 50, the head portion 620 is engaged withthe positioning groove 55, the rod portion 622 is disposed in the limitgroove 51 and further passes through the through hole 53 of the rearmoving member 50. The rod member 62 serves as a rotating shaft of theadjacent two moving members 50. Due to the shape limitation of the limitgroove 51, the movement of the moving member 50 relative to the rearadjacent moving member 50 is also limited correspondingly. Inparticular, the rotating center of the moving member 50 relative to therear adjacent moving member 50 coincides with the center O12 of thesecond limiting surface 568, the center O11 of the second positioningsurface, the center O1 of the limit groove 51, the center O5 of thepositioning groove 55, the center O2 of the bottom surface 510, thecenter O3 of the top surface 512, the center O6 of the bottom surface550, and the center O7 of the top surface 552 along the first direction.In other words, the rotating center of each moving member 50 relative tothe adjacent moving member 50 is below the bottom surface of theadjacent moving member 50. Furthermore, in order to prevent unnecessaryrotation of the moving member 50 during rotating, the first limitingsurface 544, the second limiting surface 568, the first positioningsurface 546, and the second positioning surface 566 of the moving member50 cooperatively limit the moving track of the moving member 50. Thesecond limiting surface 568 of each moving member 50 abuts against thefirst limiting surface 544 of the rear adjacent moving member 50, andthe second positioning surface 566 of each moving member 50 abutsagainst the first positioning surface 546 of the rear adjacent movingmember 50. The center O12 of the second limiting surface 568 and thecenter O11 of the second positioning surface 566 of the moving member 50coincide with the center O9 of the first limiting surface 544 and thecenter O10 of the second limiting surface 568 of the rear adjacentmoving member 50 along the first direction, and coincide with the centerO1 of the limit groove 51, the center O5 of the positioning groove 55,and the center O2 of the bottom surface 510, the center O3 of the topsurface 512, the center O6 of the bottom surface 550, the center O7 ofthe top surface 552 of the moving member 50 along the first direction,so the first limiting surface 544, the second limiting surface 568, thefirst positioning surface 546, the second positioning surface 566 canfurther allow the adjacent two moving members 50 to move along a presettrack, and can prevent unnecessary rotation of the moving member 50. Onthe other hand, before the relative rotation of the two moving members50 (ie, the support assembly 40 is in the unfolded state), the convextop surfaces of the two adjacent moving members 50 are staggered at anintersection of the two adjacent moving members 50; when the twoadjacent moving members are relatively rotated (ie, the support assembly40 is in the bent state), the top surfaces of the two adjacent movingmembers 50 are aligned to form a continuous convex arc surface. Thereby,it is convenient to support a curved surface.

The positioning groove 55 and the limit groove 51 of each moving member50 are aligned with the through hole 53 of the adjacent moving member50, so that the two adjacent moving members 50 are staggered and coupledto each other. These moving members 50, which are staggered and coupledin series, form the groups of supporting assemblies 40. Since the movingmembers 50 need to be staggered and coupled in series, if the number ofmoving members 50 is large, the width of the support assembly 40 in theleft-right direction will be large. When the support assembly 40 isapplied to a miniaturized electronic device, such as a mobile phone or aportable video player, the width of the support assembly 40 in theleft-right direction occupies a large space, which is disadvantageous tominiaturization of the device. Therefore, in the present embodiment, thesupport assembly 40 is divided into a plurality of groups separated fromeach other, such that the width of each group is controlled within asmall range. In this embodiment, there are four groups of supportingassemblies 40 along a front-rear direction, wherein the moving members50 of the first group and the third group of support assembly 40 aredescribed in the above embodiments, and the moving members 50 of thesecond group and the fourth group of the support assembly 40 aredisposed bilaterally symmetrically with respect to the structure of themoving member 50 in each of the above embodiments. In the front-reardirection, the first group and the third group of supporting assemblies40 couple the adjacent first housing 10 and the second housing 20 fromleft to right, and the second group and the fourth group of supportingassemblies 40 couple the adjacent first housing 10 and second housing 20from right to left. Thus, the connection portion 34 of the flexiblescreen 30 located between the first housing 10 and the second housing 20can be better supported.

Referring to FIGS. 2 and 15, each group of support assembly 40 includestwo moving members 70 which are fixed to the first housing 10 and thesecond housing 20 respectively. The two moving members 70 arerespectively located on the front and rear sides of each group ofsupport assembly 40. A right side portion of a moving member 70 on afront side of the first and the third groups of supporting assemblies 40has a same structure as a right side portion of the moving member 50,which means that it also includes a positioning groove 75, a limitgroove 71, a second limiting part 76, a second limiting surface, asecond positioning surface, and the like. For details, it can bereferred to the descriptions of the related structure of the movingmember 50. A left side portion of the moving member 70 includes abracket 72 in a L-shape whose top portion defines a screw hole 720aligned with the screw hole of the first housing 10. The bracket 72 ofthe moving member 70 is inserted into the groove 102 of the firsthousing 10, and the screw passes through the screw hole 720 of thebracket 72 and is locked into the screw hole of the first housing 10,thereby achieving fixation of the moving member 70 and the first housing10. A left side portion of the moving member 70 on a rear side of thefirst and third groups of the support assembly 40 has a same structureas a left side portion of the moving member 50, which means that itincludes a through hole, a first limiting part, a first limitingsurface, a first positioning surface, etc. The details are shown in therelated structure descriptions of the moving member 50. The right sideportion of the moving member 70 includes a bracket 72 in a L-shape whosetop portion defines a screw hole 720 aligned with the screw hole of thesecond housing 20. The bracket 72 of the moving member 70 is insertedinto the groove 202 of the second housing 20, and the screw passesthrough the screw hole 720 of the bracket 72 and is locked into thescrew hole of the second housing 20, thereby achieving fixation of themoving member 70 and the second housing 20. The moving member 70 of thefront side of the second and fourth groups of support assembly 40 isbilaterally symmetrically disposed with the moving member 70 of the rearside of the first and third groups of supporting assemblies 40, and themoving member 70 of the rear side of the second and fourth groups ofsupporting assemblies 40 are bilaterally symmetrically disposed withrespect to the moving member 70 of the front side of the first and thirdgroups of supporting assemblies 40. Thus, each group of support assembly40 movably couples the first housing 10 to the second housing 20 by themoving member 70.

The bottom surfaces 521 of each of the moving members 50, 70 are usedfor directly or indirectly abutting against the top surface of theconnecting portion 34 of the flexible screen 30, thereby supporting theconnecting portion 34. In this embodiment, the centers O1 of the limitgrooves 51 and the centers O5 of the positioning grooves 55 of each ofthe moving members 50 and the moving members 70, and the centers O2 ofthe bottom surfaces 510, the centers O3 of the top surfaces 512, thecenters O6 of the bottom surface 550, the centers O7 of the top surfaces552, the centers O9 of the first limiting surfaces 544, the centers O12of the second limiting surfaces 568, the centers O10 of the firstpositioning surfaces 546, the centers O11 of the second positioningsurfaces 566 are all located inside of the connecting portion 34 of theflexible screen 30. The centers O0 of the top surfaces 520 of the base52 of each of the moving members 50, 70 is below the connecting portion34 of the flexible screen 30. Since the relative rotating centers of themoving members 50, 70 are all located inside of the connecting portion34 of the flexible screen 30, when the first housing 10 and the secondhousing 20 rotate relatively, the length of the connecting portion 34between the first housing 10 and the second housing 20 remainsunchanged, without being compressed or stretched to avoid damage to theflexible screen 30. Referring to FIGS. 16-17, furthermore, in thisembodiment, the bottom surfaces 521 of the moving members 50, 70 aredetachably abutted against the top surface of the connecting portion 34of the flexible screen 30. In other words, the moving members 50, 70 arenot directly or indirectly fixed to the connecting portion 40 of theflexible screen 30, but are movably supported by the connecting portion34 of the flexible screen 30 for a more flexible supporting effect. Whenthe connecting portion 34 is unfolded, the bottom surfaces 521 of themoving members 50, 70 abut against the connecting portion 34; when theconnecting portion 34 is bent or folded, the bottom surfaces 521 of themoving members 50, 70 are partially abutted against the connectingportion 34, and the other portions of the bottom surfaces 521 of themoving members 50, 70 are separated with the connecting portion 34. Inother words, the area supported by the moving members 50, 70 when theconnecting portion 34 is bent is less than the area supported by themoving members 50, 70 when the connecting portion 34 is unfolded.

When the support assembly 40 is unfolded, the moving members 50, 70 arestaggered one by one and arranged in a diagonal line, and the topsurfaces 520 of the moving members 50, 70 are also staggered to form anon-continuous surface; when the support assembly 40 is bent, the movingmembers 50, 70 are centered to form an arc shape, the top surfaces 520of the moving members 50, 70 are continuous with each other to form acontinuous arc surface.

In order to better support the flexible screen 30, a support plate 36 isfurther provided between the bottom surfaces 521 of the moving members50, 70 and the connecting portion 34 of the flexible screen 30 (see FIG.2). The support plate 36 may be made of flexible materials such aspolypropylene, polyethylene terephthalate, polyethylene, or the like. Anarea of the support plate 36 is slightly greater than an area of theconnecting portion 34, and opposite sides of the support plate 36 arerespectively attached to positions of the bottom surfaces of the firsthousing 10 and the second housing 20 close to the groove 100. The bottomsurfaces 521 of the moving members 50, 70 of the support assembly 40abut against a top surface of the support plate 36, and a bottom surfaceof the support plate 36 is fixed to the top surface of the connectingportion 34, whereby the support assembly 40 supports the connectingportion 34 through the supporting plate 36, so as to avoid damage to theconnecting portion 34 caused by the moving members 50, 70 directlycontacting with the connecting portion 34. The support plate 36 also hasdifferent contact relationships with the support assembly 40 indifferent states. The bottom surfaces 521 of the moving members 50, 70are detachably abutted against the top surface of the support plate 36.When the connecting portion 34 is unfolded, the bottom surfaces 521 ofthe moving members 50, 70 abut against the support plate 36; when theconnecting portion 34 is bent, the bottom surfaces 521 of the movingmembers 50, 70 are partially abutted against the support plate 36, andthe other portion of the bottom surfaces 521 of the moving members 50,70 is separated from the support plate 36. In other words, the contactarea of the support plate 36 with the moving members 50, 70 when theconnecting portion 34 is bent is less than the contact area of thesupporting plate 36 with the moving members 50, 70 when the connectingportion 34 is unfolded.

In the above embodiments, each moving member 50 has the first limitingpart 54 and the second limiting part 56. It can be understood that insome conditions where a demand for accuracy is not high, the supportassembly 40 may only include two moving members 50, one of the twomoving members 50 has the first limiting part 54 and the other of thetwo moving members 50 has the second limiting part 56. One of the movingmembers 50 is fixed to the first housing 10, and the other of the twomoving members 50 is fixed to the second housing 20. The connectionportion 34 of the flexible screen 30 can also be movably supported bythe first limiting part 54 abutting against the second limiting part 56.In addition, the first limiting part 54 may also have only the firstpositioning surface 546, and the second limiting part 56 may also haveonly the second positioning surface 566, in other words, the firstlimiting part 54 may not include the first limiting surface 544, and thesecond limiting part 56 may not include the second limiting surface 568.It can be understood that the moving member 50 may also not include thefirst limiting part 54 or the second limiting part 56, and the relativemoving track of the two adjacent moving members 50 is limited by thepositioning groove 55 and the limit groove 51. Moreover, the movingmember 50 can also have only the limit groove 51, which can also limitthe moving track of the moving member 50.

Referring to FIGS. 18-19, a support assembly 40 a of another embodimentof the present disclosure is shown. The support assembly 40 a of thepresent embodiment functions the same as the support assembly 40 of theforegoing embodiment, which is used for movably coupling the adjacentfirst housing 10 and the second housing 20, and supporting the supportplate 36 or the connecting portion 34 of the flexible screen 30. Therelated structures of the first housing 10, the second housing 20, thesupport plate 36, and the flexible screen 30 are the same as those ofthe foregoing embodiment. The support assembly 40 a of the presentembodiment is also formed by a plurality of moving members 50 a coupledin series. Each moving member 50 a also includes a base 52 a, a firstlimiting part 54 a formed on a front side of the base 52 a, and a secondlimiting part 56 a formed on a rear side of the base 52 a. The base 52 adefines a through hole 53 a and a limit groove 51 a for engaging withthe connecting member 60 a so as to movably couple with the base 52 a ofthe adjacent moving member 50 a. Furthermore, the base 52 a of thepresent embodiment includes a first base plate 52 b and a second baseplate 52 c coupled to the first base plate 52 b. The first base plate 52b is manufactured separately from the second base plate 52 c; the firstbase plate 52 b and the second base plate 52 c are fixed together bywelding or the like when assembled with the connecting member 60 a.

Referring to FIGS. 20-27, an outer contour of the first base plate 52 bis the same as an outer contour of the base 52 of the foregoingembodiment. A bottom surface 521 b of the first base plate 52 b is in aflat rectangular shape; a left end surface 522 b and a right end surface523 b of the first base plate 52 b are planes perpendicular to thebottom surface 521 b; a front side surface 524 b and a rear side surface525 b of the first base plate 52 b are also planes perpendicular to thebottom surface 521 b. The area of the front side surface 524 b and therear side surface 525 b is greater than the area of the left end surface522 b and right end surface 523 b; the top surface 520 b of the firstbase plate 52 b is a convex surface, preferably an upper convex arcsurface, and its center O0 is located below the bottom surface 521 b. Aleft side portion of the first base plate 52 b defines a through hole 53b, and a right side portion of the first base plate 52 b defines a limitgroove 51 b. The through hole 53 b cuts through the first base plate 52b from front to rear. An inner wall surface of the through hole 53 bincludes two opposite planes, thus reducing a width of the through hole53 b in the left-right direction, thereby saving the area occupied bythe through hole 53 b. The limit groove 51 b also cuts through the firstbase plate 52 b from front to rear. The shape and the orientation andthe angle of the extending track of the limit groove 51 b of the presentembodiment are the same as that of the limit groove 51 of the foregoingembodiment. The extending track of the limit groove 51 b is also an arcshape whose center O1 is located under the bottom surface 521 b of thefirst base plate 52 b. The limit groove 51 b of the present embodimentalso includes a bottom surface 510 b, a top surface 512 b, and two sidesurfaces 514 b coupling the top surface 512 b and the bottom surface 510b. The bottom surface 510 b is an up-convex curved surface, the topsurface 512 b is an up-concave curved surface, and the side surfaces 514b are curved surfaces concaving to the left and right, respectively. Inthis embodiment, the curvature of the bottom surface 510 b is greaterthan that of the top surface 512 b, and the top surface 512 b isparallel to the bottom surface 510 b. The curved surface of the bottomsurface 510 b is a part of an arc surface, and its center O2 is locatedbelow the bottom surface 521 b of the first base plate 52 b. The curvedsurface of the top surface 512 b is also a part of an arc surface, andits center O3 is located below the bottom surface 521 b of the firstbase plate 52 b, and the center O3 coincides with the center O2 of thebottom surface 510 b and the center O1 of the limit groove 51 b. Inparticular, the center O1 of the limit groove 51 b, the center O2 of thebottom surface 510 b, and the center O3 of the top surface 512 b arelocated close to the bottom surface 521 b of the first base plate 52 b.The side surfaces 514 b are smoothly coupled the top surface 512 b andthe bottom surface 510 b. The side surface 514 b is also a part of anarc surface, but its center O4 is located inside the limit groove 51 b,higher than the bottom surface 510 b, and below the top surface 512 b.The centers O4 of the two side surfaces 514 b are different in height,wherein the center O4 of the left side surface 514 b is higher than thecenter O4 of the right side surface 514 b, causing the limit groove 51 bto incline to the right. In other words, the center O3 of the topsurface 512 b, and the center O2 of the bottom surface 510 b are belowthe centers O4 of the side surfaces 514 b.

The first base plate 52 b defines a groove 540 b in its front sidesurface 524 b. The groove 540 b extends downward from the top surface512 b to inside of the first base plate 52 b, and the groove 540 b alsoextends forward through the front side surface 524 b of the first baseplate 52 b. The portion of the first base plate 52 b located below thegroove 540 b forms a first limiting part 54 a. The bottom surface of thegroove 540 b (i.e., a top surface of the first limiting part 54 a) formsthe first positioning surface 546 a. The top portion of the through hole53 b cuts through the first positioning surface 546 a to separate thefirst positioning surface 546 a into two separate sections. The firstpositioning surface 546 a is an arc surface, and its center O10 islocated below the bottom surface 521 b of the first base plate 52 b, andthe center O10, the center O1 of the limit groove 51 b, the center O2 ofthe bottom surface 510 b and the center O3 of the top surface 512 b areconsistent in height. The height of the center O10 of the firstpositioning surface 546 a is higher than the height of the center O0 ofthe top surface 520 b of the first base plate 52 b. In particular, thecenter O10 of the first positioning surface 546 a is located close tothe left end surface 522 b of the first base plate 52 b; the center O1of the limit groove 51 b, the center O2 of the bottom surface 510 b, andthe center O3 of the top surface 512 b are located close to the rightend surface 523 b of the first base plate 52 b. The curvature of thefirst positioning surface 546 a is greater than that of the top surface520 b of the first base plate 52 b. An inclination direction of thefirst positioning surface 546 a is the left, and is opposite to theinclination direction of the limit groove 51 b. A left end of the firstpositioning surface 546 a is aligned with a left end surface 522 b ofthe first base plate 52 b, and a right end of the first positioningsurface 546 a terminates at an edge of the limit groove 51 b.

The front side surface 524 b of the first base plate 52 b furtherincludes a stopper 58 b protruding from a position close to the limitgroove 51 b. The stopper 58 b is located above the limit groove 51 b andis located close to the top surface 520 b and the right end surface 523b of the first base plate 52 b. The stopper 58 b is used for limiting amoving range of the moving member 50 a. When the support assembly 40 ais in an unfolded state, the moving member 50 a is abutted with thestopper 58 b of the rear adjacent moving member 50 a; when the supportassembly 40 a is in a bent state, the moving member 50 a is separatedfrom the stopper 58 b of the rear adjacent moving member 50 a.

The rear side surface 525 b of the first base plate 52 b defines apositioning groove 55 b around the limit groove 51 b. The area of thepositioning groove 55 b is greater than that of the limit groove 51 b.The positioning groove 55 b extends forward from the rear side surface525 b of the first base plate 52 b to inside of the first base plate 52b, that is, the positioning groove 55 b does not cut through the firstbase plate 52 b from rear to front. An extending track of thepositioning groove 55 b is also in an arc shape whose center O5 is belowthe bottom surface 521 b of the first base plate 52 b. The positioninggroove 55 b also includes a top surface 552 b, a bottom surface 550 b,and two side surfaces 554 b. The top surface 552 b of the positioninggroove 55 b is also a concave curved surface and is parallel to the topsurface 512 b of the limit groove 51 b; the bottom surface 550 b of thepositioning groove 55 b is a convex curved surface and is parallel tothe bottom surface 510 b of the limit groove 51 b; the side surfaces 554b of the positioning groove 55 b each is a concave curved surface, andis parallel to the side surface 514 b of the limit groove 51 b. In thisembodiment, the curvature of the bottom surface 550 b of the positioninggroove 55 b is greater than that of the top surface 552 b. The curvedsurface of the bottom surface 550 b is a part of an arc surface, and itscenter O6 is located below the bottom surface 521 b of the first baseplate 52 b. The curved surface of the top surface 552 b is also a partof the arc surface, and its center O7 is located below the bottomsurface 521 b of the first base plate 52 b and coincides with the centerO6 of the bottom surface 550 b. In particular, the center O5 of thepositioning groove 55 b, the center O6 of the bottom surface 550 b, andthe center O7 of the top surface 552 b are located close to the bottomsurface 521 b of the first base plate 52 b, and coincide with the centerO1 of the limit groove 51 b and the center O2 of the bottom surface 510b, and the center O3 of the top surface 512 b along the first direction.The first direction is a direction from one side of the base 52 a to theopposite side. In the present embodiment, the first direction is adirection from the front side surface of the base 52 a to the rear sidesurface or a direction from the rear side surface to the front sidesurface. In other words, the first direction is a thickness direction ofthe base 52 a, or a depth direction of the limit groove 51 a or thepositioning groove 55 b. The side surfaces 554 b of the positioninggroove 55 b smoothly couple the top surface 552 b and the bottom surface550 b. The side surface 554 b is also a part of an arc surface, but itscenter O8 is located inside of the positioning groove 55 b and is higherthan the bottom surface 550 b, and below the top surface 552 b. Thecenters O8 of the side surfaces 554 b of the positioning groove 55 bcoincide with the centers O4 of the side surfaces 514 b of the limitgroove 51 b along the first direction. In this embodiment, thepositioning groove 55 b has only one side surface 554 b, and the otherside of the positioning groove 55 b cuts through the right side surface523 b of the first base plate 52 b. An inclination direction of thepositioning groove 55 b is the right.

The second base plate 52 c is located on a rear side of the first baseplate 52 b. An outer contour of the second base plate 52 c is the sameas that of the first base plate 52 b and the base 52 of the foregoingembodiment. The second base plate 52 c defines a through hole 53 c and alimit groove 51 c cutting through the front side surface 524 c and therear side surface 525 c. The through hole 53 c of the second base plate52 c is aligned with the through hole 53 b of the first base plate 52 b,and the limit groove 51 c is aligned with the limit groove 51 b of thefirst base plate 52 b. The through hole 53 c of the second base plate 52c is circular and an area of the through hole 53 c is less than that ofthe through hole 53 b of the first base plate 52 b. The shape,orientation, and size of the limit groove 51 c of the second base plate52 c are the same as those of the limit groove 51 b of the first baseplate 52 b, as described in the limit groove 51 b of the first baseplate 52 b. The extending track of the limit groove 51 c is an arc shapewhose center O13 is located below the bottom surface 521 c of the secondbase plate 52 c. The limit groove 51 c of this embodiment also includesa bottom surface 510 c, a top surface 512 c, and two side surfaces 514 ccoupling the top surface 512 c and the bottom surface 510 c. The bottomsurface 510 c is an up-convex curved surface, the top surface 512 c isan up-concave curved surface, and the side surfaces 514 c are concavecurved surfaces concaving to the left and to the right, respectively. Inthis embodiment, the curvature of the bottom surface 510 c is greaterthan that of the top surface 512 c, and the top surface 512 c isparallel to the bottom surface 510 c. The curved surface of the bottomsurface 510 c is a part of an arc surface, and its center O14 is locatedbelow the bottom surface 521 c of the second base plate 52 c. The curvedsurface of the top surface 512 c is also a part of an arc surface, andits center O15 is located below the bottom surface 521 c of the secondbase plate 52 c, and the center O15 coincides with the center O14 of thebottom surface 510 c and the center O13 of the limit groove 51 c. Inparticular, the center O13 of the limit groove 51 c, the center O14 ofthe bottom surface 510 c and the center O15 of the top surface 512 c arelocated close to the bottom surface 521 c of the second base plate 52 c.The side surfaces 514 c smoothly couples the top surface 512 c and thebottom surface 510 c. The side surfaces 514 c each is also a part of anarc surface, but its center O16 is located inside of the limit groove 51c and is higher than the bottom surface 510 c, and is below the topsurface 512 c. The centers O16 of the two side surfaces 514 c aredifferent in height, wherein the center O16 of the left side surface 514c is higher than the center O16 of the right side surface 514 c, causingthe limit groove 51 c to incline to the right. In other words, thecenter O15 of the top surface 512 c, the center O14 of the bottomsurface 510 c are below the centers O16 of the side surfaces 514 c. Therear side surface 525 c of the second base plate 52 c includes a secondlimiting part 56 a protruding from a position close to the limit groove51 c. The second limiting part 56 a is located close to the top surface520 c and the right side surface 523 c of the second base plate 52 c.The top surface of the second limiting part 56 a is aligned with the topsurface 520 c of the second base plate 52 c, the right end surface ofthe second limiting part 56 a is aligned with the right end surface 523c of the second base plate 52 c, the left end surface of the secondlimiting part 56 a is located close to the left side surface 514 c ofthe limit groove 51 c, and the bottom surface of the second limitingpart 56 a is located close to the top surface 512 c of the limit groove51 c. The bottom surface of the second limiting part 56 a forms a secondpositioning surface 566 a. The second positioning surface 566 a is anarc surface, and its center O11 is located below the bottom surface 521c of the second base plate 52 c. The height of the center O11 of thesecond positioning surface 566 a is the same as that of the center O13of the limit groove 51 c, the center O14 of the bottom surface 510 c andthe center O15 of the the top surface 512 c, and further as same as thatof the center O10 of the first positioning surface 546 a of the firstbase plate 52 b and the center O1 of the limit groove 51 b and thecenter O2 of the bottom surface 510 b and the center O3 of the topsurface 512 b. The height of the center O11 of the second positioningsurface 566 a is greater than that of the center O17 of the top surface520 c of the second base plate 52 c. In particular, the center O11 ofthe second positioning surface 566 a is located close to the right endsurface 523 c of the second base plate 52 c. The center O11 of thesecond positioning surface 566 a, the center O13 of the limit groove 51c, the center O15 of the top surface 512 c and the center O14 of thebottom surface 510 c coincide along the first direction, and furthercoincides with the center O1 of the limit groove 51 b of the first baseplate 52 b, and the center O2 of the bottom surface 510 b and the centerO3 of the the top surface 512 b along the first direction. The curvatureof the second positioning surface 566 a is greater than that of the topsurface 520 c of the second base plate 52 c. An inclination direction ofthe second positioning surface 566 a is the right, which is the same asthat of the limit groove 51 c. The left end of the second positioningsurface 566 a is adjacent to the left side surface 514 c of the limitgroove 51 c, and the right end of the second positioning surface 566 ais aligned with the right end surface 523 c of the second base plate 52c.

The second base plate 52 c also defines a receiving groove 57 c in itsfront side surface 524 c. The receiving groove 57 c extends to inside ofthe second base plate 52 c from front to rear. A left side contour ofthe receiving groove 57 c is circular, and a right side contour of isthe same as that of the limit groove 51 c. The left side of thereceiving groove 57 c interconnects with the through hole 53 c, and theright side interconnects with the limit groove 51 c.

The first base plate 52 b and the second base plate 52 c are fixedtogether by welding, bonding, or the like to form a complete movingmember 50 a. The outer contours of the first base plate 52 b and thesecond base plate 52 c are aligned with each other; the through hole 53b of the first base plate 52 b is aligned with and interconnected withthe through hole 53 c of the second base plate 52 c to cooperativelyconstitute the through hole 53 a of the moving member 50 a; the limitgroove 51 b of the first base plate 52 b is aligned with andinterconnected with the limit groove 51 c of the second base plate 52 cto form the limit groove 51 a of the moving member 50 a; the positioninggroove 55 b of the first base plate 52 b is interconnected with thereceiving groove 57 c of the second base plate 52 c. The bottom surface521 b of the first base plate 52 b is combined with the bottom surface521 c of the second base plate 52 c to form the bottom surface 521 a ofthe base 50 a. The top surface 520 b of the first base plate 52 b iscombined with the top surface 520 c of the second base plate 53 b toform the top surface 520 a of the base 52 a. The left end surface 522 bof the first base plate 52 b is combined with the left end surface 522 cof the second base plate 52 c to form the left end surface 522 a of thebase 52 a. The right end surface 523 b of the first base plate 52 b iscombined with the right end surface 523 c of the second base plate 52 cto form the right end surface 523 a of the base 52 a. The front sidesurface 524 b of the first base plate 52 b forms the front side surface524 a of the base 52 a. The rear side surface 525 c of the second baseplate 52 c forms the rear side surface 525 a of the base 52 a.

Referring to FIGS. 19 and 28, the adjacent moving members 50 a arecoupled in series through the connecting member 60 a. In thisembodiment, the connecting member 60 a that is coupled in series witheach two adjacent moving members 50 a includes a rod member 62 a and alocking member 64 a that is sleeved on the rod member 62 a. Whenassembled, the through hole 53 a of each moving member 50 a is alignedwith the limit groove 51 a of the adjacent moving member 50 a, and thesecond limiting part 56 a of each moving member 50 a abuts against bythe first limiting part 54 a of the rear adjacent moving member 50 a,and the first limiting part 54 a of each moving member 50 a abutsagainst the second limiting part 56 a of the front adjacent movingmember 50 a. The rod member 62 a passes through the limit groove 51 a ofeach moving member 50 a and penetrates into the through hole 53 a of therear adjacent moving member 50 a. The locking member 64 a is locked toone end of the rod member 62 a penetrating into the through hole 53 a ofthe rear adjacent moving member 50 a, thereby limiting the rod member 62a. In the present embodiment, the rod member 62 a includes a headportion 620 a, a rod portion 622 a extending rearward from the headportion 620 a, and an end portion 624 a extending forward from the headportion 620 a. The rod portion 622 a is received in the limit grooves 51b and 51 c of the first base plate 52 b of the moving member 50 a, thethrough hole 53 b of the first base plate 52 b and the through hole 53 cof the second base plate 52 c of the rear adjacent moving member 50 a.In particular, the rod portion 622 a has two planes for abutting againstthe two planes of the through hole 53 b, respectively. The head portion620 a is received in the positioning groove 55 b of the first base plate52 b of the moving member 50 a, and is located between the front sidesurface of the positioning groove 55 b of the first base plate 52 b andthe front side surface 524 c of the second base plate 52 c to preventthe rod member 622 a from falling off. The end portion 624 a is insertedinto the limit groove 51 b of the first base plate 52 b. The rod portion622 a includes a screw threads formed on one end of the rod portion 622a away from the head portion 620 a. In this embodiment, the lockingmember 64 a is a nut that is locked to the screw threads at the end ofthe rod portion 622 a to prevent the rod member 62 a from falling off.In order to adjust the rotational damping between the adjacent movingmembers 50 a, the rod portion 622 a further includes a spring 66 a. Thespring 66 a is located between the rear side surface 525 a of the movingmember 50 a and the front side surface of the nut. By adjusting the nuton the screw threads of the rod member 62 a, A degree to which thespring 66 a is compressed can be adjusted, thereby adjusting therotational damping between the adjacent moving members 50 a. In thisembodiment, the locking member 64 a and the spring 66 a are respectivelyreceived in the receiving groove 57 c of the rear adjacent moving member50 a to protect the locking member 64 a and the spring 66 a.

The adjacent moving members 50 a are coupled in series through theconnection of the connecting member 60 a. The first limiting part 54 aof each moving member 50 a abuts against the second limiting part 56 aof the adjacent moving member 50 a, wherein the first positioningsurface 546 a of the first limiting part 54 a abuts against the secondpositioning surface 566 a of the second limiting part 56 a, therebylimiting the two adjacent moving members 50 a and further limiting therelative moving track of the two adjacent moving members 50 a.

In the present embodiment, the rod member 62 a serves as a rotatingshaft of the adjacent two moving members 50 a. Due to the shapelimitation of the limit groove 51 a, the movement of the moving member50 a relative to the rear adjacent moving member 50 a is also limitedaccordingly. In particular, a rotating center of the moving member 50 arelative to the rear adjacent moving member 50 a coincides with thecenters O1, O13 of the limit groove 51 a of the rear adjacent movingmember 50 a, and the center O3 of the top surface 512 b, the center O15of the top surface 512 c, the center O2 of the bottom surface 510 b, andthe center O14 of the bottom surface 510 c along the first direction,that is, the rotating center of each moving member 50 a relative to theadjacent moving member 50 a is below the bottom surface 521 a of theadjacent moving member 50 a. Further, in order to prevent unnecessaryrotation of the moving member 50 a during rotating, the firstpositioning surface 546 a and the second positioning surface 566 a ofthe moving member 50 a cooperatively limit the moving track of themoving member 50 a. The second positioning surface 566 a of each movingmember 50 a abuts against the first positioning surface 546 a of therear adjacent moving member 50 a. Due to the center O11 of the secondpositioning surface 566 a of the moving member 50 a coincides with thecenter O10 of the first positioning surface 546 a of the rear adjacentmoving member 50 a along the first direction, and further coincides withthe centers O1, O13 of the limit groove 51 a and the center O3 of thetop surface 512 b, the center O15 of the top surface 512 c, the centerO2 of the bottom surface 510 b, and the center O14 of the bottom surface510 c of the moving member 50 a along the first direction, thereby thefirst positioning surface 546 a, the second positioning surface 566 acan further limit the relative movement of the adjacent two movingmembers 50 a along a preset track, and can prevent the unnecessaryrotation of the moving member 50 a. Furthermore, the stopper 58 b of thefront side surface 524 a of the moving member 50 a can further limit therotation of the front adjacent moving member 50 a to prevent excessiverotation thereof. On the other hand, before the relative rotation of thetwo moving members 50 a (ie, the support assembly 40 a is in theunfolded state), the convex top surface 520 a of the two adjacent movingmembers 50 a is staggered at the intersection between the two adjacentmoving members 50 a; when the two adjacent moving members 50 a arerelatively rotated, the top surface 520 a of the two adjacent movingmembers 50 a gradually aligns with each other; after the two movingmembers 50 a are relatively rotated (ie, the support assembly 40 a is inthe bent state), the top surfaces 520 a of the two adjacent movingmembers 50 a are aligned to form a continuous convex arc surface.Thereby, it is convenient to support the curved surface.

It can be understood that the support assembly 40 a of the presentembodiment can also be divided into multiple groups, and the front andrear moving members 50 a of each group of support assembly 40 a can alsohave a bracket fixed with the first housing 10 or the second housing 20as in the foregoing embodiment, and the specific structure and theconnection relationship of the bracket can be referred to thedescriptions of the foregoing embodiment.

The bottom surface 521 a of each moving member 50 a is used for directlyor indirectly abutting against the top surface of the connecting portion34 of the flexible screen 30, thereby supporting the connecting portion34. In this embodiment, the center O1 of the limit groove, the centerO13 of the limit groove 51 a, the center O5 of the positioning groove 55a, the center O2 of the bottom surface 510 b, the center O14 of thebottom surface 510 c, the center O6 of the bottom surface 550 b, thecenter O3 of the top surface 512 b, the center O15 of the top surface512 c, the center O7 of the top surface 552 b, the center O10 of thefirst positioning surface 546 a and the center O11 of the secondpositioning surface 566 a of each moving member 50 a are all locatedinside of the connecting portion 34 of the flexible screen 30. Thecenter O0 of the top surface 520 a of the base 52 a of each movingmember 50 a is below the connecting portion 34 of the flexible screen30. Since the relative rotating centers of the respective moving members50 a are all located inside the connecting portion 34 of the flexiblescreen 30, when the first housing 10 and the second housing 20 arerelatively rotated, the length of the connecting portion 34 between thefirst housing 10 and the second housing 20 remains unchanged withoutbeing compressed or stretched to avoid damage to the flexible screen 30.The bottom surface 521 of the moving member 50 a is detachably abutagainst the top surface 521 a of the connecting portion 34 of theflexible screen 30. In other words, the moving member 50 a is notdirectly or indirectly fixed to the connecting portion 40 of theflexible screen 30, but movably supports the connecting portion 34 ofthe flexible screen 30 to provide a more flexible supporting effect.When the connecting portion 34 is unfolded, the bottom surface 521 a ofthe moving member 50 a abuts against the connecting portion 34; when theconnecting portion 34 is bent, the bottom surface 521 a of the movingmember 50 a partially contacts the connecting portion 34, and the otherportion of the bottom surface 521 a of the moving member 50 a isseparated from the connecting portion 34. In other words, the areasupported by the moving member 50 a when the connecting portion 34 isbent is less than the area supported by the moving member 50 a when theconnecting portion 34 is unfolded.

When the support assembly 40 a is unfolded, the moving members 50 a arestaggered one by one and arranged in a diagonal line, and the topsurfaces 520 a of moving members 50 a are also staggered to present anon-continuous surface; when the support assembly 40 a is bent, themoving members 50 a are centered in an arc shape, and the top surface520 a of the moving members 50 a are continuous with each other to forma continuous curved surface.

In order to better support the flexible screen 30, a support plate 36 isfurther provided and located the bottom surface 521 a of the movingmember 50 a and the connecting portion 34 of the flexible screen 30. Thesupport plate 36 can be made of flexible materials such aspolypropylene, polyethylene terephthalate, polyethylene or the like. Thearea of the support plate 36 is slightly greater than the area of theconnecting portion 34, and the opposite sides of the support plate 36are respectively attached to the positions of the bottom surfaces of thefirst housing 10 and the second housing 20 close to the groove 100. Thebottom surface 521 a of the moving member 50 a of the support assembly40 a abuts against the top surface of the support plate 36, and thebottom surface of the support plate 36 is fixed to the top surface ofthe connecting portion 34, whereby the support assembly 40 a supportsthe connecting portion 34 through the support plate 36 to avoid damageto the connecting portion 34 caused by the moving member 50 a directlycontacting with the connecting portion 34. The support plate 36 also hasdifferent contact relationships with the support assembly 40 a indifferent states. The bottom surface 521 a of the moving member 50 a isdetachably abutting against the top surface of the support plate 36.When the connecting portion 34 is unfolded, the bottom surface 521 a ofthe moving member 50 a abuts against the support plate 36; when theconnecting portion 34 is bent, the bottom surface 521 a of the movingmember 50 a has a portion that abuts against the support plate 36 andanother portion of the moving member 50 a is separated from the supportplate 36. In other words, the contact area of the support plate 36 withthe moving member 50 a when the connecting portion 34 is bent is lessthan the contact area of the support plate 36 with the moving member 50a when the connecting portion 34 is unfolded.

It can be understood that in some occasions where a demand to accuracyis not high, the support assembly 40 a may also include only two movingmembers 50 a, wherein one of the two moving members 50 a has the firstlimiting part 54 a and the other of the two moving members 50 a has thesecond limiting part 56 a. One of the moving members 50 a is fixed tothe first housing 10, and the other of the two moving members 56 a isfixed to the second housing 20. By the first limiting part 54 a abuttingagainst the second limiting part 56 a, the connection portion 34 of themovable support 30 can also be movably supported. Moreover, the firstlimiting part 54 a may also have the first limiting surface and thefirst positioning surface 546 a as in the foregoing embodiment, and thesecond limiting part 56 a may also have the second limiting surface andthe second positioning surface 566 a. That is, the first limiting part54 a may further include the first limiting space, and the secondlimiting part 56 a may further include the second limiting space. It isalso understood that the moving member 50 a may also not include thefirst limiting part 54 a and the second limiting part 56 a, and therelative moving track of the adjacent moving members 50 a can also belimited by the positioning groove 55 a and the limit groove 51 a.Moreover, the moving member 50 a may also have only the limit groove 51a, and may also have the effect of limiting the moving track of themoving member 50 a.

In this embodiment, the connecting member 60 a is relatively simple toassemble by separating the first base plate 52 b and second base plate52 c, and only the head portion 620 a needs to be located between thefirst base plate 52 b and the second base plate 52 c to realize theassembly of the connecting member 60 a and the moving member 50 a.

The present disclosure can support various forms of the flexible screen30 by coupling a plurality of relatively movable moving members 50, 50a, in particular, a curved shape and a support of a flat form.Therefore, the presenting support assembly 40, 40 a can be widelyapplied to a foldable or bendable product of the flexible screen 30.

It can be understood that the “unfolded state” and “bent state” refer totwo relative comparative state relationships in the present disclosure,and the support assembly 40, 40 a/flexible device is not required to befully unfolded or fully bent, as long as one state is compared to theother. If the state is further curved, it can be considered to belong tothe curved state and the unfolded state, respectively.

It is also to be understood that the “center of the surface” as used inthe present disclosure means that the distance from each position of thesurface to the center is the same in a plane perpendicular to thesurface. Similarly, the “center of the groove” as used by the presentdisclosure means that the distance from each position of the groove tothe center is the same.

What is claimed is:
 1. A support assembly, comprising: a plurality ofmoving members and connecting members each connecting two adjacentmoving members of the plurality of moving members, a movement of each ofthe plurality of moving members relative to an adjacent moving memberenabling the support assembly to be switched between an unfolded stateand a bent state.
 2. The support assembly according to claim 1, wherein,the movement of each of the plurality of moving members relative to theadjacent moving member comprises a rotation of each of the plurality ofmoving members relative to the adjacent moving member, and a rotatingcenter of each of the plurality of moving members rotating relative tothe adjacent moving member is below the adjacent moving member.
 3. Thesupport assembly according to claim 1, wherein, each of the plurality ofmoving members comprises a base, and, a limit groove and a through holedefined on the base, each of the connecting members passes through thelimit groove of one of the plurality of moving members and penetratesthe through hole of the adjacent moving member.
 4. The support assemblyaccording to claim 3, wherein, the limit groove of each of the pluralityof moving members is in an arc shape, and a center of the limit grooveis below a bottom surface of the base.
 5. The support assembly accordingto claim 4, wherein, each of the plurality of moving members furthercomprises a first limiting part and a second limiting part respectivelylocating on opposite sides of the base, the second limiting part of eachof the plurality of moving members is movably abutting against the firstlimiting part of the adjacent moving member.
 6. The support assemblyaccording to claim 5, wherein, a moving track of the second limitingpart of each of the plurality of moving members relative to the firstlimiting part of the adjacent moving member is in an arc shape, a centerof the moving track is below the adjacent moving member.
 7. The supportassembly according to claim 5, wherein, the first limiting part and thesecond limiting part are respectively adjacent to opposite ends of eachof the plurality of moving members.
 8. The support assembly according toclaim 5, wherein, the first limiting part comprises a first positioningsurface in an arc shape, the second limiting part comprises a secondpositioning surface in an arc shape, centers of the first positioningsurface and the second positioning surface are below the bottom surfaceof the base.
 9. The support assembly according to claim 8, wherein, thefirst positioning surface and the second positioning surface arerespectively inclined toward opposite ends of the base; or, a height ofa center of the first positioning surface is the same as a height of acenter of the second positioning surface; or, the center of the secondpositioning surface coincides with the center of the limit groove alonga first direction, and the first direction is from one side of the baseto an opposite side of the base. 10.-11. (canceled)
 12. The supportassembly according to claim 4, wherein, a top surface of the base is anarc-shaped surface, and top surfaces of the bases of two adjacent movingmembers are staggered when the support assembly is unfolded, and the topsurfaces of the bases of the two adjacent moving members are continuouswith each other when the support assembly is bent.
 13. The supportassembly according to claim 12, wherein, a center of the top surface ofthe base is below the center of the limit groove.
 14. The supportassembly according to claim 8, wherein, the first limiting part furthercomprises a first limiting surface, the second limiting part furthercomprises a second limiting surface, the second limiting surface of eachof the plurality of moving members is movably abutting against the firstlimiting surface of the adjacent moving member.
 15. The support assemblyaccording to claim 14, wherein, the first limiting surface is higherthan the first positioning surface and is further away from the basethan the first positioning surface; or, the second limiting surface ishigher than the second positioning surface and closer to the base thanthe second positioning surface; or, a center of the first limitingsurface coincides with the center of the first positioning surface alonga first direction, and a center of the second limiting surface coincideswith the center of the second positioning surface along the firstdirection, and the first direction is from a side of the base to anopposite side of the base. 16.-17. (canceled)
 18. The support assemblyaccording to claim 3, wherein, each of the connecting members comprisesa rod member and a locking member, the rod member comprises a headportion and a rod portion passing through two adjacent moving members,an end of the rod portion is locked with the locking member.
 19. Thesupport assembly according to claim 18, wherein, the base of each of theplurality of moving members defines a positioning groove for receivingthe head portion, and the positioning groove surrounds the limit grooveand interconnects with the limit groove.
 20. The support assemblyaccording to claim 19, wherein, the base comprises a first base plateand a second base plate manufactured independently of each other, thehead portion of the rod member is located between the first base plateand the second base plate.
 21. The support assembly according to claim20, wherein, the connecting member further comprises an end portion, theend portion and the rod portion are respectively located on oppositesides of the head portion, and the end portion penetrates into the limitgroove of the first base plate, the rod portion penetrates into thelimit groove of the second base plate; or, the through hole of the firstbase plate comprises two opposite planes, and the rod portioncorrespondingly forms two opposite planes corresponding to the twoopposite planes of the through hole.
 22. (canceled)
 23. The supportassembly according to claim 20, wherein, the first base plate forms astopper above the limit groove, each of the plurality of moving membersis abutted against by the stopper of the adjacent moving member to limita rotating angle when the support assembly is in the unfolded state,each of the plurality of moving members is separated from the stopper ofthe adjacent moving member when the support assembly is in the bentstate.
 24. The support assembly according to claim 20, wherein, thepositioning groove is defined on a surface of the first base platefacing the second base plate, and a receiving groove is defined on asurface of the second base plate facing the first base plate andinterconnected with the positioning groove, the rod portion of theconnecting member passes through the limit groove of each of theplurality of moving members and penetrates into the receiving groove ofthe adjacent moving member.
 25. The support assembly according to claim24, wherein, the locking member is received in the receiving groove ofthe second base plate of the adjacent moving member.